The Interview Question I Always Ask
One question that consistently unlocks the most honest, useful responses in user interviews.
After hundreds of user interviews, I have one question I always come back to. It is not clever, and it does not feel like a research breakthrough. But it consistently unlocks the most honest, useful responses I have ever gotten.
The question is: "Walk me through the last time you did [the thing we are researching]." Not "how do you usually" or "what do you think about" — but the last specific time. Yesterday. Last Tuesday. The most recent real instance.
User research session
What makes this work is that it bypasses the participant's internal PR department. When you ask someone how they "usually" do something, they give you the aspirational version — the process they think they follow, cleaned up for a stranger. When you ask about the last time, you get the messy truth: the shortcuts, the workarounds, the moments where they gave up and did something else entirely.
The follow-ups write themselves. "What happened next?" "Where did you get stuck?" "What did you try first?" You are not asking people to theorize about their behavior. You are asking them to remember. And memory, even imperfect memory, is far more reliable than self-assessment.
The question: "Walk me through the last time you did [the thing]." Specific memory beats general self-assessment every time.
After 'walk me through the last time,' the best follow-ups are: 'What happened next?' 'Where did you get stuck?' 'What did you try first?' 'Was there a moment where you almost gave up?' Each one pulls the participant deeper into specific memory rather than general opinion.
Avoid 'why' questions early — they trigger justification mode. Save 'why' for after the participant has described the full sequence of events.
